1. How many geometrical isomers are possible for Complex [Pt(Py)(H2O)ClBr]?

a. 0

b. 2

c. 3

d. 4​

2. An enzyme gets denature at:

a. Low-temperature

b. High-temperature

c. High-pressure

d. Physiological pH

3. Which method is used for extraction of aluminium:
a. Bayer’s method
b. Hall’s method
c. Serpeck’s method
d. All of above 


4. ……….. is an aluminium ore:
a. Dolomite
b. Galema
c. Bauxite
d. Carnallite


5. The correct order of effects of functional group in decreasing acidity:
a. I>Br<Cl<F
b. I<Br<Cl<F
c. I>Br>Cl>F
d. I<Br>Cl>F


6. The Monomer of Lactose is:
a. D-Glucose and D-Galactose
b. D-Glucose and D-fructose
c. L-Galactose and D-fructose
d. D-Glucose and L-Galactose


7. The oxidation state of Xe in XeO3 will be:
a. +4
b. +6
c. +2
d. +3


8. The number of unpaired electrons in Mn3+
a. 1
b. 2
c. 3
d. 4


9. [𝐶𝑜(𝑁𝐻3)5𝑆𝑂4]𝐵𝑟 𝑎𝑛𝑑 [𝐶𝑜(𝑁𝐻3)5𝐵𝑟]𝑆𝑂4 is an example of:
a. Ionisation isomerism
b. Hydrate isomerism
c. Linkage isomerismd. Co-ordination isomerism


10. C6H5N2 +Cl-   ------------>    C6H5Cl + N2
a. Sandmeyer’s reaction
b. Gattermann Reaction
c. Wurtz fittig reaction
d. None of above


11. Which drug is used to treat cancer:
a. Cisplatin
b. Ofloxacin
c. Both
d. None


12. The mass of 1 mole electron will be:
(Hint: mass of electron is 9.109 x 10-31 Kg):
a. 5.5 x 10-7 kg/mol
b. 5.5 x 107 kg/mol
c. 9.109 x 10-31 Kg/mol
d. 9.109 x 1031 Kg/mol


13. Hybridisation of water molecules is
a. sp
b. sp3
c. sp2
d. sp3d


14. The bond order of N2 is:
a. 2
b. 2.5
c. 3
d. 3.5


15. The correct order of electron affinity of halogens:
a. Cl>F>Br>I
b. F>Cl>Br>I
c. I>Br>Cl>F
d. F>Cl<Br>I


16. Which of the following is not diamagnetic:
a. NO+
b. NO
c. N2
d. O2


17. Second law of thermodynamics states that
a. Energy can not be created nor be destroyed
b. Energy of a system always increases
c. Entropy of a system always increases
d. None of above


18. The pH of 0.001 M HCl will be:
a. 1
b. 2
c. 3
d. 4


19. What will be the solubility product of CaCl2 if it’s solubility is 2 x 10-4 ML-1
:
a. 16 x 10-12
b. 32 x 10-12
c. 3 x 10-5
d. 6.4 x 10-10


20. Acid rain is caused by:
a. CO and SO2
b. SO2 and NO2
c. SO3 and CO2
d. O3 and H2O


21. Which of the following has maximum covalency 2
a. H
b. Li
c. B
d. K


22. Particle nature of electron was discovered by
a. Neil Bohr
b. Maxborn
c. J. J. Thomson
d. De-Broglie


23. If l= 3 and n=4, the maximum number of electrons will be:
a. 10
b. 12
c. 14
d. 8


24. Which chemical absorbs carbon dioxide in Duma’s method?
a. Potassium hydroxide
b. Sulphuric acid
c. Urea
d. Acetic acid


25. Which of the following is a greenhouse gas?
a. CO2
b. Methane
c. Halocarbons
d. All of above